Language Intrinsics

Tsonic language intrinsics live in @tsonic/core/lang.js.

Common intrinsics

import {
  asinterface,
  defaultof,
  nameof,
  out,
  sizeof,
  stackalloc,
  trycast,
} from "@tsonic/core/lang.js";

Why they exist

These intrinsics expose CLR/lowering-aware operations that TypeScript itself does not model directly.

Examples:

• nameof for CLR-friendly name extraction
• sizeof for deterministic size queries
• stackalloc and out for CLR interop cases
• asinterface and trycast for explicit interface/cast intent

Typical usage categories

Name and shape helpers

• nameof
• sizeof
• defaultof

CLR interop helpers

• out
• stackalloc
• asinterface
• trycast

Attribute and overload metadata

The same module also carries language-facing marker DSL pieces used in CLR-heavy codebases for attributes and overload families.